6456642466547 has 48 divisors (see below), whose sum is σ = 8581297213440. Its totient is φ = 4801572240192.

The previous prime is 6456642466531. The next prime is 6456642466559. The reversal of 6456642466547 is 7456642466546.

It is not a de Polignac number, because 6456642466547 - 2⁴ = 6456642466531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6456642466507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 563213 + ... + 3637374.

It is an arithmetic number, because the mean of its divisors is an integer number (178777025280).

Almost surely, 2^{6456642466547} is an apocalyptic number.

6456642466547 is a deficient number, since it is larger than the sum of its proper divisors (2124654746893).

6456642466547 is a wasteful number, since it uses less digits than its factorization.

6456642466547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200760 (or 4200753 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 65.

Subtracting 6456642466547 from its reverse (7456642466546), we obtain a palindrome (999999999999).

The spelling of 6456642466547 in words is "six trillion, four hundred fifty-six billion, six hundred forty-two million, four hundred sixty-six thousand, five hundred forty-seven".